Cleaning machine

Abstract

The cleaning machine comprises a cleaning pool, and a primary cleaning assembly, a first drying assembly, an ultrasonic cleaning machine, a second drying assembly, a re-cleaning assembly and a third drying assembly are sequentially arranged in the cleaning pool in the length direction of the cleaning pool; the primary cleaning assembly is used for spraying cleaning liquid to a workpiece; the first drying assembly is used for carrying out primary drying and liquid control on the workpiece; the ultrasonic cleaning machine is used for carrying out ultrasonic cleaning on the workpiece; the second drying assembly is used for drying and controlling the liquid of the workpiece again; the re-cleaning assembly is used for spraying clean water to the workpiece; the third drying assembly dries the workpiece again and wipes the workpiece dry. A plurality of conveying rollers are arranged in the cleaning pool, the conveying rollers are continuously arranged in the length direction of the cleaning pool, all the conveying rollers are rotationally connected with the side wall of the cleaning pool, and a driving assembly for driving all the conveying rollers to rotate synchronously is arranged outside the cleaning pool. Workpiece cleaning automation is achieved, and the workpiece cleaning efficiency and the cleaning effect are improved.

Description

Technical Field

[0001] This invention relates to the field of workpiece cleaning, and more particularly to a cleaning machine. Background Technology

[0002] After grinding and polishing, metal workpieces need to be cleaned to remove impurities from their surface.

[0003] Traditional metal workpiece cleaning involves manually rinsing the workpiece surface with a handheld spray nozzle. Only one workpiece can be cleaned at a time, resulting in high labor intensity, low efficiency, and the cleaning effect needs improvement. Summary of the Invention

[0004] To address the aforementioned technical problems, the purpose of this invention is to provide a cleaning machine.

[0005] The cleaning machine of the present invention includes a cleaning tank, wherein a pre-cleaning component, a first drying component, an ultrasonic cleaner, a second drying component, a re-cleaning component, and a third drying component are arranged sequentially along the length of the cleaning tank. The initial cleaning component is used to spray cleaning fluid onto the workpiece. The first drying component is used to initially dry the workpiece and initially wipe away the cleaning liquid. The ultrasonic cleaning machine performs ultrasonic cleaning on the workpiece. The second drying assembly is used to further dry the workpiece and wipe away the cleaning solution. The re-cleaning assembly is used to spray clean water onto the workpiece; The third drying component is used to further dry the workpiece and wipe it dry; The cleaning tank is equipped with conveying rollers, and several conveying rollers are continuously arranged along the length of the cleaning tank. All the conveying rollers are rotatably connected to the side wall of the cleaning tank. A drive assembly is provided outside the cleaning tank to drive all the conveying rollers to rotate synchronously.

[0006] Furthermore, the conveying roller is provided with a limiting ring on its peripheral sidewall. Multiple limiting rings are equidistantly arranged along the axial direction of the conveying roller, and the limiting rings on adjacent conveying rollers are staggered.

[0007] Furthermore, the initial cleaning assembly includes an initial cleaning nozzle, with multiple initial cleaning nozzles spaced apart along the length of the cleaning tank. Multiple nozzles are spaced apart along the axial direction of each initial cleaning nozzle on its sidewall. The end of the initial cleaning nozzle is connected to a cleaning liquid via a pipe and a liquid pump. The liquid pump pumps the cleaning liquid into the initial cleaning nozzle through the pipe and then sprays it onto the workpiece through the nozzle.

[0008] Furthermore, the first drying assembly includes a first sponge roller and a first air knife. The first sponge roller is rotatably disposed above the conveying roller, and the rotation direction of the first sponge roller is opposite to that of the conveying roller. The first sponge roller is in contact with the upper surface of the workpiece. The first air knife is fixedly connected to the cleaning tank through a mounting bracket, and the first air knife blows high-pressure air onto the workpiece. The first sponge roller is located on both sides of the width direction of the first air knife.

[0009] Furthermore, the second drying assembly includes a second sponge roller and a second air knife. The second sponge roller is rotatably disposed above the conveying roller, and the rotation direction of the second sponge roller is opposite to that of the conveying roller. The second sponge roller contacts the upper surface of the workpiece. The second air knife is fixedly connected to the cleaning tank through a mounting bracket, and the second air knife blows high-pressure air onto the workpiece. The second sponge roller is located on both sides of the width direction of the second air knife.

[0010] Furthermore, the re-cleaning assembly includes re-cleaning nozzles, with multiple re-cleaning nozzles spaced apart along the length of the cleaning tank. Multiple nozzles are spaced apart along the axial direction of each re-cleaning nozzle on its sidewall. The end of each re-cleaning nozzle is connected to clean water via a pipe and a liquid pump. The liquid pump pumps clean water into the re-cleaning nozzle through the pipe and then sprays it onto the workpiece through the nozzles.

[0011] Furthermore, the third drying assembly includes a third sponge roller and a third air knife. The third sponge roller is rotatably disposed above the conveying roller, and the rotation direction of the third sponge roller is opposite to that of the conveying roller. The third sponge roller contacts the upper surface of the workpiece. The third air knife is fixedly connected to the cleaning tank through a mounting bracket, and the third air knife blows high-pressure air onto the workpiece. Multiple third sponge rollers are spaced apart along the length of the cleaning tank, and multiple third air knives are spaced apart along the length of the cleaning tank.

[0012] Furthermore, the drive assembly includes a drive motor, a drive gear, a driving gear, a driven gear, a synchronizing rod, a first helical gear, and a second helical gear. The drive gear is coaxially mounted on the output shaft of the drive motor. The driving gear is located on both sides of the drive gear in the radial direction. The two driving gears and one drive gear rotate synchronously through a first synchronizing toothed belt. The synchronizing rod is rotatably disposed at both ends of the conveyor roller in the axial direction. The driven gear is coaxially mounted on the synchronizing rod. The driven gear and the corresponding driving gear rotate synchronously through a second synchronizing toothed belt. The first helical gear is coaxially mounted on the synchronizing rod. The second helical gear is coaxially mounted at both ends of the conveyor roller. The first helical gear and the second helical gear mesh.

[0013] Furthermore, an impurity separation device is provided next to the cleaning pool. The impurity separation device includes a magnetic separator and a filter assembly. The magnetic separator is used to separate metal impurities, and the filter assembly is used to filter sewage in the clear water pool. The magnetic separator includes a waste collection frame, a magnetic roller, and a pressure roller. The magnetic roller and the pressure roller are rotatably connected within the waste collection frame and rotate in opposite directions. The outer peripheral wall of the magnetic roller abuts against the outer peripheral wall of the pressure roller. The magnetic roller is located above the pressure roller. A waste discharge plate is provided at the top of one end of the waste collection frame. The end of the waste discharge plate away from the waste collection frame is the lowest end of the waste discharge plate. The outer peripheral wall of the magnetic roller contacts the top of the waste discharge plate. When the magnetic roller rotates, it transfers metal impurities to the waste discharge plate. A water inlet is provided at the end of the waste collection frame away from the waste discharge plate. A water outlet is provided on the side of the waste collection frame away from the cleaning tank. A drain pipe is provided on the side wall of the cleaning tank. The drain pipe is connected to the water inlet. A water pump is connected to the water outlet through the water outlet pipe. The other end of the water pump is connected to a filter assembly.

[0014] Furthermore, the filtration assembly includes at least two filter canisters, each containing multiple filter screens arranged from top to bottom. A first water pipe is provided at the top of the filter canister, and a second water pipe is provided at the bottom of the filter canister. The second water pipe between two adjacent filter canisters is connected to the first water pipe. The water pump and the filter assembly have a filtration state and a backwashing state; When the water pump and filter assembly are in the filtration state, the output end of the water pump is connected to the first water pipe of the filter tank through a connecting pipe, and finally the second water pipe of the filter tank near the cleaning pool is connected to the liquid inlet pipe of the initial cleaning spray pipe. When the water pump and filter assembly are in the backwashing state, the output end of the water pump is connected to the second water pipe of the filter tank through a connecting pipe, and finally the first water pipe of the filter tank near the cleaning pool discharges sewage through the drain pipe.

[0015] By means of the above-described solution, the present invention has at least the following advantages: 1. Reduce the intensity of manual labor; 2. Improve workpiece cleaning efficiency and cleaning effect; 3. Wastewater in the cleaning tank is recycled and reused, saving resources.

[0016] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a cleaning machine according to an embodiment of this application.

[0019] Figure 2 This is a schematic diagram illustrating the internal structure of the cleaning machine in an embodiment of this application.

[0020] Figure 3 This is a structural schematic diagram from another perspective used in an embodiment of this application to show the interior of the cleaning machine.

[0021] Figure 4 This is used to illustrate the embodiments of this application. Figure 1 A schematic diagram of the structure at point A in the middle.

[0022] Figure 5 This is used to illustrate the embodiments of this application. Figure 2 A schematic diagram of the structure at point B.

[0023] Figure 6 This is used to illustrate the embodiments of this application. Figure 2 A schematic diagram of the structure at point C.

[0024] Figure 7 This is a schematic diagram illustrating the structure of the impurity separation device in the embodiments of this application.

[0025] Figure 8 This is a schematic diagram illustrating the structure of the magnetic separator in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Cleaning tank; 11. Conveyor roller; 111. Limiting ring; 2. Initial cleaning nozzle; 3. First drying assembly; 31. First sponge roller; 32. First air knife; 4. Ultrasonic cleaner; 5. Second drying assembly; 51. Second sponge roller; 52. Second air knife; 6. Re-cleaning nozzle; 7. Third drying assembly; 71. Third sponge roller; 72. Third air knife; 8. Drive assembly; 81. Drive motor; 82. Drive gear; 83. 84. Driven gear; 85. Synchronizing rod; 86. First helical gear; 87. Second helical gear; 88. Matching gear one; 89. Matching gear two; 9. Impurity separation device; 91. Magnetic separator; 911. Waste collection frame; 9111. Water inlet; 9112. Water outlet; 912. Waste discharge plate; 913. Magnetic roller; 914. Pressure roller; 92. Filter tank; 921. First water pipe; 922. Second water pipe; 93. Water pump; 94. Drain pipe. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0028] This application discloses a cleaning machine.

[0029] Reference Figure 1-8 The cleaning machine includes a cleaning tank 1, into which both cleaning fluid and clean water fall. Along its length, the cleaning tank 1 is sequentially equipped with a pre-cleaning assembly, a first drying assembly 3, an ultrasonic cleaner 4, a second drying assembly 5, a re-cleaning assembly, and a third drying assembly 7.

[0030] The initial cleaning unit is used to spray cleaning fluid onto the workpiece; The first drying component 3 is used for preliminary drying of the workpiece and preliminary wiping away of the cleaning liquid. The ultrasonic cleaning machine 4 performs ultrasonic cleaning on the workpiece; The second drying component 5 is used to further dry the workpiece and wipe away the cleaning solution. The re-cleaning unit is used to spray clean water onto the workpiece; The third drying component 7 is used to further dry the workpiece and wipe it dry; The cleaning tank 1 is equipped with conveyor rollers 11, and several conveyor rollers 11 are continuously arranged along the length of the cleaning tank 1. All conveyor rollers 11 are rotatably connected to the side wall of the cleaning tank 1. The cleaning tank 1 is equipped with a drive assembly 8 that drives all conveyor rollers 11 to rotate synchronously.

[0031] The conveying roller 11 is provided with a limiting ring 111 on its peripheral side wall. Multiple limiting rings 111 are equidistantly arranged along the axial direction of the conveying roller 11. The limiting rings 111 on two adjacent conveying rollers 11 are staggered to accommodate conveying smaller workpieces and prevent workpieces from falling off.

[0032] The initial cleaning assembly includes an initial cleaning nozzle 2, with multiple initial cleaning nozzles 2 spaced apart along the length of the cleaning tank 1. Multiple nozzles on the side wall of each initial cleaning nozzle 2 are spaced apart along the axial direction of the initial cleaning nozzle 2. The end of the initial cleaning nozzle 2 is connected to the cleaning liquid via a pipe and a liquid pump. The liquid pump pumps the cleaning liquid into the initial cleaning nozzle 2 through the pipe, and then sprays it onto the workpiece through the nozzle, so that the cleaning liquid is sprayed onto the surface of the workpiece.

[0033] The first drying assembly 3 includes a first sponge roller 31 and a first air knife 32. The first sponge roller 31 is rotatably disposed above the conveying roller 11. The first sponge roller 31 rotates in the opposite direction to the conveying roller 11. The first sponge roller 31 contacts the upper surface of the workpiece. The first air knife 32 is fixedly connected to the cleaning tank 1 through a mounting bracket. The first air knife 32 blows high-pressure air onto the workpiece. The first sponge roller 31 is located on both sides of the width direction of the first air knife 32.

[0034] The workpiece first passes through the first sponge roller 31, where the cleaning liquid is initially absorbed. The workpiece then passes through the first air knife 32 to be dried, and then passes through the first sponge roller 31 again for further drying, thus achieving drying after initial cleaning.

[0035] The ultrasonic cleaner 4 is located between the first drying component 3 and the second drying component 5, and the workpiece undergoes secondary cleaning through the ultrasonic cleaner 4.

[0036] The second drying assembly 5 includes a second sponge roller 51 and a second air knife 52. The second sponge roller 51 is rotatably disposed above the conveying roller 11. The second sponge roller 51 rotates in the opposite direction to the conveying roller 11. The second sponge roller 51 contacts the upper surface of the workpiece. The second air knife 52 is fixedly connected to the cleaning tank 1 through a mounting bracket. The second air knife 52 blows high-pressure air onto the workpiece. The second sponge roller 51 is located on both sides of the width direction of the second air knife 52.

[0037] The workpiece first passes through the second sponge roller 51, where it absorbs further cleaning fluid. The workpiece then passes through the second air knife 52 to be dried, and then passes through the second sponge roller 51 again for further drying, thus achieving drying after ultrasonic cleaning.

[0038] The re-cleaning assembly includes a re-cleaning nozzle 6, with multiple re-cleaning nozzles 6 spaced apart along the length of the cleaning tank 1. Multiple nozzles on the side wall of each re-cleaning nozzle 6 are spaced apart along the axial direction of the re-cleaning nozzle 6. The end of the re-cleaning nozzle 6 is connected to clean water via a pipe and a liquid pump. The liquid pump delivers clean water pump 93 to the interior of the re-cleaning nozzle 6 through the pipe, and then sprays it onto the workpiece through the nozzles, rinsing the cleaning solution clean with clean water.

[0039] The third drying assembly 7 includes a third sponge roller 71 and a third air knife 72. The third sponge roller 71 is rotatably disposed above the conveyor roller 11, and the rotation direction of the third sponge roller 71 is opposite to that of the conveyor roller 11. The third sponge roller 71 is in contact with the upper surface of the workpiece. The third air knife 72 is fixedly connected to the cleaning tank 1 through a mounting bracket, and the third air knife 72 blows high-pressure air onto the workpiece. Multiple third sponge rollers 71 are arranged at intervals along the length direction of the cleaning tank 1, and multiple third air knives 72 are arranged at intervals along the length direction of the cleaning tank 1.

[0040] The workpiece first passes through the third sponge roller 71, which squeezes and absorbs the liquid on the surface of the workpiece. The workpiece then passes through the third air knife 72 to be dried, thus achieving drying after cleaning.

[0041] The drive assembly 8 includes a drive motor 81, a drive gear 82, a driving gear 83, a driven gear 84, a synchronizing rod 85, a first helical gear 86, and a second helical gear 87. The drive gear 82 is coaxially mounted on the output shaft of the drive motor 81. The driving gear 83 is located on both sides of the drive gear 82 in the radial direction. There are two driving gears 83 on each side of the drive gear 82 in the radial direction. The driving gear 83 corresponding to the drive gear 82 rotates synchronously with the drive gear 82 through a first synchronizing toothed belt. The synchronizing rod 85 is rotatably disposed at both ends of the conveyor roller 11 in the axial direction. The driven gear 84 is coaxially mounted on the synchronizing rod 85. The driven gear 84 and the corresponding driving gear 83 rotate synchronously through a second synchronizing toothed belt. The first helical gear 86 is coaxially mounted on the synchronizing rod 85. The second helical gear 87 is coaxially mounted at both ends of the conveyor roller 11. The first helical gear 86 and the second helical gear 87 mesh with each other.

[0042] The drive motor 81 controls the drive gear 82 to rotate, which drives the corresponding drive gear 83 to rotate. Another drive gear 83 drives the corresponding driven gear 84 to rotate, causing the synchronizing rod 85 to rotate, which drives the first helical gear 86 to rotate, drives the second helical gear 87 to rotate, and drives each conveyor roller 11 to rotate, thereby making all conveyor rollers 11 rotate synchronously.

[0043] The first sponge roller 31, the second sponge roller 51, and the third sponge roller 71 are coaxially connected to the rotating shafts of the first sponge roller 31, the second sponge roller 51, and the third sponge roller 71. The second helical gear 87, which corresponds to the first sponge roller 31, the second sponge roller 51, and the third sponge roller 71, is coaxially connected to the rotating shaft of the second helical gear 87. The first sponge roller 88 and the second sponge gear 89 mesh, causing the first sponge roller 31, the second sponge roller 51, the third sponge roller 71 to rotate in the opposite direction to the conveying roller 11.

[0044] The process, consisting of a pre-cleaning component, a first drying component 3, an ultrasonic cleaner 4, a second drying component 5, a re-cleaning component, and a third drying component 7, reduces manual labor intensity and improves workpiece cleaning efficiency and effectiveness.

[0045] A wastewater separation device 9 is provided next to the cleaning tank 1. The wastewater separation device 9 includes a magnetic separator 91 and a filter assembly. The magnetic separator 91 is used to separate metal impurities, and the filter assembly is used to filter the wastewater in the clean water tank.

[0046] The magnetic separator 91 includes a waste collection frame 911, a magnetic roller 913, and a pressure roller 914. The magnetic roller 913 and the pressure roller 914 are rotatably connected inside the waste collection frame 911 and rotate in opposite directions. The outer peripheral wall of the magnetic roller 913 abuts against the outer peripheral wall of the pressure roller 914. The magnetic roller 913 is located above the pressure roller 914. A waste discharge plate 912 is provided at the top of one end of the waste collection frame 911. The end of the waste discharge plate 912 away from the waste collection frame 911 is the lowest end of the waste discharge plate 912. The outer peripheral wall of the magnetic roller 913 abuts against the waste discharge plate 914. The top of the plate 912 contacts the magnetic roller 913, which transfers metal impurities to the waste discharge plate 912 when it rotates. The waste collection frame 911 is provided with an inlet 9111 at one end away from the waste discharge plate 912, and an outlet 9112 is provided on the side of the waste collection frame 911 away from the washing tank 1. A drain pipe 94 is provided on the side wall of the washing tank 1, and the drain pipe 94 is connected to the inlet 9111. The outlet 9112 is connected to a water pump 93 through the outlet pipe, and the other end of the water pump 93 is connected to the filter assembly.

[0047] A rotating motor is installed on the side wall of the waste collection frame 911. The output shaft of the rotating motor is coaxially connected to the magnetic roller 913. A first gear is coaxially connected to the rotating shaft of the magnetic roller 913. A second gear is coaxially connected to the rotating shaft of the pressure roller 914. The first gear and the second gear mesh.

[0048] Metal impurities are separated by magnetic separator 91 to avoid damage to water pump 93 and filter components.

[0049] The filter assembly includes at least two filter canisters 92, with multiple filter screens arranged from top to bottom inside each filter canister 92. A first water pipe 921 is provided at the top of the filter canister 92, and a second water pipe 922 is provided at the bottom of the filter canister 92. The second water pipe 922 between two adjacent filter canisters 92 is connected to the first water pipe 921.

[0050] The water pump 93 has a filtration state and a backwashing state between it and the filter assembly.

[0051] When the water pump 93 and the filter assembly are in filtration mode, the output end of the water pump 93 is connected to the first water pipe 921 of the filter tank 92 via a connecting pipe, and finally, the second water pipe 922 of the filter tank 92 closest to the cleaning tank 1 is connected to the liquid inlet pipe of the initial cleaning spray pipe 2. The water pump 93 pumps the liquid in the cleaning tank 1 from the first water pipe 921 into the filter tank 92, passing through multiple layers of filter screens to achieve multi-stage filtration, thus recycling the wastewater in the cleaning tank 1 and saving resources.

[0052] When the water pump 93 and the filter assembly are in the backwashing state, the output end of the water pump 93 is connected to the second water pipe 922 of the filter tank 92 through the connecting pipe. Finally, the first water pipe 921 of the filter tank 92 closest to the cleaning pool 1 discharges sewage through the drain pipe to clean the filter screen.

[0053] The implementation principle of a cleaning machine according to an embodiment of this application is as follows: The workpiece is conveyed on the conveyor roller 11 and passes through the initial cleaning component, the first drying component 3, the ultrasonic cleaner 4, the second drying component 5, the re-cleaning component, and the third drying component 7 in sequence, realizing automatic and efficient cleaning of the workpiece, reducing manual labor intensity, and improving the cleaning efficiency and cleaning effect.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cleaning machine characterized by: The cleaning tank is sequentially provided with a primary cleaning assembly, a first drying assembly, an ultrasonic cleaner, a second drying assembly, a re-cleaning assembly and a third drying assembly along the length direction of the tank. The primary cleaning assembly is used for spraying cleaning liquid on the workpiece. The first drying assembly is used for preliminarily drying the workpiece and preliminarily wiping off the cleaning liquid. The ultrasonic cleaner is used for ultrasonic cleaning of the workpiece. The second drying assembly is used for re-drying the workpiece and further wiping off the cleaning liquid. The re-cleaning assembly is used for spraying clean water on the workpiece. The third drying assembly is used for re-drying the workpiece and wiping dry the workpiece. The cleaning tank is provided with conveying rollers, a plurality of which are continuously arranged along the length direction of the tank, and all of the conveying rollers are rotatably connected to the side wall of the tank.

2. The cleaning machine of claim 1, wherein: The side wall of the conveying roller is provided with limiting snap rings, a plurality of which are equidistantly arranged along the axial direction of the conveying roller, and the limiting snap rings on adjacent two conveying rollers are arranged alternately.

3. The cleaning machine of claim 1, wherein: The primary cleaning assembly comprises primary cleaning spray pipes, a plurality of which are arranged at intervals along the length direction of the tank, a plurality of nozzles on the side wall of each primary cleaning spray pipe are arranged at intervals along the axial direction of the primary cleaning spray pipe, and the end of the primary cleaning spray pipe is externally connected to a liquid pump through a pipeline to pump cleaning liquid into the primary cleaning spray pipe and then spray the cleaning liquid on the workpiece through the nozzles.

4. The cleaning machine of claim 1, wherein: The first drying assembly comprises a first sponge roller and a first air knife, the first sponge roller is rotatably arranged above the conveying roller, the rotating direction of the first sponge roller is opposite to that of the conveying roller, the first sponge roller is in contact with the upper surface of the workpiece, the first air knife is fixedly connected to the tank through a mounting bracket, and the first air knife sprays high-pressure air on the workpiece; and the first sponge roller is located on both sides of the first air knife in the width direction.

5. The cleaning machine of claim 1, wherein: The second drying assembly comprises a second sponge roller and a second air knife, the second sponge roller is rotatably arranged above the conveying roller, the rotating direction of the second sponge roller is opposite to that of the conveying roller, the second sponge roller is in contact with the upper surface of the workpiece, the second air knife is fixedly connected to the tank through a mounting bracket, and the second air knife sprays high-pressure air on the workpiece; and the second sponge roller is located on both sides of the second air knife in the width direction.

6. The cleaning machine of claim 1, wherein: The re-cleaning assembly comprises re-cleaning spray pipes, a plurality of which are arranged at intervals along the length direction of the tank, a plurality of nozzles on the side wall of each re-cleaning spray pipe are arranged at intervals along the axial direction of the re-cleaning spray pipe, and the end of the re-cleaning spray pipe is externally connected to a liquid pump through a pipeline to pump clean water into the re-cleaning spray pipe and then spray the clean water on the workpiece through the nozzles.

7. The cleaning machine of claim 1, wherein: The third drying assembly comprises a third sponge roller and a third air knife, the third sponge roller is rotationally arranged above the conveying roller, the third sponge roller is opposite in rotation direction to the conveying roller, the third sponge roller is in contact with the upper surface of the workpiece, the third air knife is fixedly connected with the cleaning tank through a mounting bracket, and the third air knife sprays high-pressure air on the workpiece; a plurality of third sponge rollers are arranged along the length direction of the cleaning tank, and a plurality of third air knives are arranged along the length direction of the cleaning tank.

8. The cleaning machine of claim 1, wherein: The driving assembly comprises a driving motor, a driving gear, a driving gear, a driven gear, a synchronous rod, a first bevel gear and a second bevel gear, the driving gear is coaxially arranged on the output shaft of the driving motor, the driving gears are located on the two sides of the driving gear in the radial direction, and the two driving gears are synchronously rotated with the driving gear through a first synchronous tooth belt; the synchronous rod is rotationally arranged at the two ends of the conveying roller in the axial direction, the driven gear is coaxially arranged on the synchronous rod, and the driven gear is synchronously rotated with the corresponding driving gear through a second synchronous tooth belt; the first bevel gear is coaxially arranged on the synchronous rod, and the second bevel gear is coaxially arranged at the two ends of the conveying roller, and the first bevel gear and the second bevel gear are meshed.

9. The cleaning machine of claim 1, wherein: The cleaning tank is provided with a foreign matter separation device, the foreign matter separation device comprises a magnetic separator and a filtering assembly, the magnetic separator is used for separating metal impurities, and the filtering assembly is used for filtering sewage in the clean water tank; The magnetic separator comprises a waste collecting frame, a magnetic roller and a pressing roller, the magnetic roller and the pressing roller are rotationally connected in the waste collecting frame and are opposite in rotation direction, the outer peripheral wall of the magnetic roller and the outer peripheral wall of the pressing roller are in abutment, the magnetic roller is located above the pressing roller, the top of one end of the waste collecting frame is provided with a waste discharging plate, the end of the waste discharging plate away from the waste collecting frame is the lowest end of the waste discharging plate, the outer peripheral wall of the magnetic roller is in contact with the top of the waste discharging plate, the magnetic roller rotates to transfer metal impurities to the waste discharging plate, the end of the waste collecting frame away from the waste discharging plate is provided with a water inlet, the side of the waste collecting frame away from the cleaning tank is provided with a water outlet, a drain pipe is arranged on the side wall of the cleaning tank, the drain pipe is connected with the water inlet, the water outlet is connected with a water pump through a water outlet pipe, and the other end of the water pump is connected with the filtering assembly.

10. The cleaning machine of claim 9, wherein: The filtering assembly comprises at least two filtering cans, a plurality of filter screens are arranged in the filtering cans from top to bottom, a first water pipe is arranged at the top end of the filtering can, a second water pipe is arranged at the bottom end of the filtering can, and the second water pipe and the first water pipe are connected between adjacent two filtering cans; The water pump and the filtering assembly have a filtering state and a backwashing state; When the water pump and the filtering assembly are in the filtering state, the output end of the water pump is connected with the first water pipe of the filtering can through a connecting pipe, and the second water pipe of the last filtering can close to the cleaning tank is connected with the liquid inlet pipeline of the primary cleaning spray pipe; When the water pump and the filtering assembly are in the backwashing state, the output end of the water pump is connected with the second water pipe of the filtering can through a connecting pipe, and the first water pipe of the last filtering can close to the cleaning tank is discharged through a sewage discharge pipe.

Images